[ Ref. 110607 MMD, "MIDI File Player System for Band Organ Music" ]

WIDI is specified as being compatible with Windows XP only, not Win 7.
I think I remember using it under Win 7 but that the setup program
doesn't work.  I don't really use mine much so I am not interested in
putting a lot of effort into figuring it out, but I did write my own
configuration utilities that send the necessary SYSEX messages to the
device to set various options like the channel.  As far as I know,
these programs should work as well under Win 7 as under XP as all they
do is send messages to the chosen device.

If anyone who has more patience and/or need than I wants to try these
utilities, I will share them.

Best regards,
Spencer Chase
Garberville, Calif.
http://www.spencerserolls.com/